DNS Gurus
Open Cached · just now
73/100 SECURITY SCORE

Certificate Information

Subject
CN=registrar.wisc.edu
Issuer
C=US, O=Amazon, CN=Amazon RSA 2048 M04
Valid From
August 26, 2025
Valid Until
September 24, 2026 312 days
Public Key
RSA 2048 bit Adequate
Signature Algorithm
SHA256-RSA
SHA-256 Fingerprint
3E:53:84:D2:DF:3D:B9:CC:F7:BA:8C:A4:31:15:E1:0E:82:9B:16:7E:D4:D0:7F:F2:D3:16:05:B4:E1:9F:FA:2D
Alternative Names
99 domains

Security Configuration

TLS Protocols
TLS 1.2
Forward Secrecy
Limited (Check cipher configuration)
Warnings
  • • TLS 1.3 is not supported (recommended)

HTTP Security Headers

Status
Strict-Transport-Security
Missing
Not configured
Content-Security-Policy
Missing
Not configured
X-Frame-Options
Missing
Not configured
X-Content-Type-Options
Missing
Not configured
Referrer-Policy
Missing
Not configured
Permissions-Policy
Missing
Not configured
Recommendations
  • • Add Strict-Transport-Security header with max-age of at least 1 year
  • • Add Content-Security-Policy header to prevent XSS attacks
  • • Add X-Frame-Options: DENY or SAMEORIGIN to prevent clickjacking
  • • Add X-Content-Type-Options: nosniff
  • • Add Referrer-Policy header (recommended: strict-origin-when-cross-origin)
  • • Consider adding Permissions-Policy to control browser features

CAA Records (Certificate Authority Authorization)

CAA Records
Not Configured (Any CA can issue certificates)
CAA Issues
  • • No CAA records configured - any CA can issue certificates
Recommendations
  • • Implement CAA records to restrict which CAs can issue certificates for your domain
  • • This adds an extra layer of security against unauthorized certificate issuance
  • • Example: Add CAA record 'example.com. CAA 0 issue "letsencrypt.org"'
  • • Consider adding 'iodef' record to receive security incident reports

Subject Alternative Names

99 domains
accessible.wisc.edu oursharedfuture.wisc.edu ous.wisc.edu pact.wisc.edu pathology.wisc.edu pbk.wisc.edu pddc.wisc.edu peacecorps.wisc.edu peopleprogram.wisc.edu pfmp.wisc.edu pgtp.wisc.edu phikappaphi.wisc.edu philosophy.wisc.edu photostore.wisc.edu physicalplant.wisc.edu plantbreeding.wisc.edu plantcare.wisc.edu plantcmb.wisc.edu plantpath.wisc.edu plutarchinbyzantium.wisc.edu polisci.wisc.edu pollinators.wisc.edu posseprogram.wisc.edu postalmail.wisc.edu poweroutagestories.wisc.edu prc.wisc.edu printing.wisc.edu provost.wisc.edu psgsc.wisc.edu publicart.wisc.edu pushkin.wisc.edu qmbp.wisc.edu quality.wisc.edu rdc.wisc.edu recsports.wisc.edu recwell.wisc.edu registrar.wisc.edu religiousstudies.wisc.edu riseupandwrite.wisc.edu robotics.wisc.edu rotcprojectgo.wisc.edu rrf.wisc.edu xiaolab.wisc.edu *.accessible.wisc.edu *.oursharedfuture.wisc.edu *.pddc.wisc.edu *.pfmp.wisc.edu *.phikappaphi.wisc.edu *.philosophy.wisc.edu *.plantbreeding.wisc.edu *.plantcare.wisc.edu *.plantcmb.wisc.edu *.plutarchinbyzantium.wisc.edu *.polisci.wisc.edu *.pollinators.wisc.edu *.postalmail.wisc.edu *.poweroutagestories.wisc.edu *.prc.wisc.edu *.psgsc.wisc.edu *.pushkin.wisc.edu *.qmbp.wisc.edu *.rdc.wisc.edu *.recwell.wisc.edu *.religiousstudies.wisc.edu *.rotcprojectgo.wisc.edu *.rrf.wisc.edu *.russell.wisc.edu *.xiaolab.wisc.edu coop-res-unit-annual-report.russell.wisc.edu distdevs.it.wisc.edu impactlab.surgery.wisc.edu reachlab.psych.wisc.edu thrive.pediatrics.wisc.edu *.anderson.research.wisc.edu *.barak-lab.russell.wisc.edu *.buongiorno.russell.wisc.edu *.coop-res-unit-annual-report.russell.wisc.edu *.davidmallinson.pophealth.wisc.edu *.distdevs.it.wisc.edu *.eab.russell.wisc.edu *.hops.russell.wisc.edu *.hub.russell.wisc.edu *.impactlab.surgery.wisc.edu *.insectlab.russell.wisc.edu *.insectsasfood.russell.wisc.edu *.lindroth.russell.wisc.edu *.molecularecology.russell.wisc.edu *.mosquitosite.russell.wisc.edu *.novelecosystems.russell.wisc.edu *.organic-seed-potato.russell.wisc.edu *.paskewitz.russell.wisc.edu *.peters.pathology.wisc.edu *.raffa.russell.wisc.edu *.rakotondrafaralab.russell.wisc.edu *.reachlab.psych.wisc.edu *.seedpotato.russell.wisc.edu *.swd.russell.wisc.edu *.thrive.pediatrics.wisc.edu *.vegpath.plantpath.wisc.edu